Believe it or not but I have been looking for this movie for at least 5 years...Hopefully someone can help

Plot: Female Detective tries to find a kidnapper who lures kids using an ice cream truck (female actress has above shoulder blonde hair ,faint blue eyes and a mole either below her mouth or a little above it)

One scene is the female meets this little boy in a blue room who draws pictures of someone and she tries to pry information bu the boy is traumatized and unable to speak.

Another is the detective finds this abandoned house and enters through a basement when she hears someone coming she hides behind boxes and watches as a man a girl play piano and I believe her mouth is sewn shut.

I ask everyone they say they don't know the title but know the film im talking about...thx and help me with my Obsession!!!